# -*-Makefile-*-
# Makefile fragment for JOS kernel.
# This is NOT a complete makefile;
# you must run GNU make in the top-level directory
# where the GNUmakefile is located.
#

OBJDIRS += kern

ARCHDIR	:= kern/arch/$(K_ARCH)
EMBEDBINS_DEFAULT := default
include $(ARCHDIR)/Makefrag

KERN_GEN := kern/kern/printf.c \
	    kern/kern/string.c \
	    kern/kern/syscall.c \
	    kern/kern/intr.c \
	    kern/kern/sched.c \
	    kern/kern/handle.c \
	    kern/kern/container.c \
	    kern/kern/gate.c \
	    kern/kern/label.c \
	    kern/kern/segment.c \
	    kern/kern/device.c \
	    kern/kern/kobj.c \
	    kern/kern/timer.c \
	    kern/kern/pstate.c \
	    kern/kern/uinit.c \
	    kern/kern/netdev.c \
	    kern/kern/freelist.c \
	    kern/kern/log.c	\
	    kern/kern/pagetree.c \
	    kern/kern/sync.c \
	    kern/kern/prof.c \
	    kern/kern/dstack.c \
	    kern/kern/kocache.c \
	    kern/kern/stackwrap.c \
	    kern/kern/thread.c \
	    kern/kern/as.c \
	    kern/kern/part.c \
	    kern/kern/panic.c \
	    kern/kern/pagealloc.c \
	    kern/kern/console.c \
	    kern/kern/fb.c \
	    kern/kern/mousedev.c \
	    kern/kern/disk.c

KERN_BTREE := \
	    kern/btree/btree.c \
	    kern/btree/btree_search.c \
	    kern/btree/btree_node.c \
	    kern/btree/cache.c \
	    kern/btree/pbtree_frm.c \
	    kern/btree/btree_manager.c \
	    kern/btree/pbtree.c \
	    kern/btree/btree_delete.c \
	    kern/btree/btree_insert.c \
	    kern/btree/btree_traverse.c \
	    kern/btree/btree_debug.c

KERN_SRCFILES := $(KERN_ARCH) $(KERN_DEV) $(KERN_GEN) $(KERN_LIB) $(KERN_BTREE)

KERN_OBJFILES := $(addsuffix .o, $(notdir $(basename $(KERN_SRCFILES))))
KERN_OBJFILES := $(addprefix $(OBJDIR)/kern/, $(KERN_OBJFILES))

# Binary program images to embed within the kernel.
include conf/embedbin/Makefrag

KERN_EMBEDFILES := \
	    $(patsubst %,$(OBJDIR)/kern/embed_%.o,$(subst /,_,$(KERN_BINFILES))) \
	    $(OBJDIR)/kern/embedbin.o

# How to build kernel object files
$(OBJDIR)/kern/%.o: kern/arch/$(K_ARCH)/%.S
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) -c -o $@ $<
$(OBJDIR)/kern/%.o: kern/arch/$(K_ARCH)/%.c
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) $(CSTD) -c -o $@ $<
$(OBJDIR)/kern/%.o: kern/kern/%.c
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) $(CSTD) -c -o $@ $<
$(OBJDIR)/kern/%.o: $(OBJDIR)/kern/%.c
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) $(CSTD) -c -o $@ $<
$(OBJDIR)/kern/%.o: kern/dev/%.c
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) $(CSTD) -c -o $@ $<
$(OBJDIR)/kern/%.o: kern/btree/%.c
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) $(CSTD) -c -o $@ $<
$(OBJDIR)/kern/%.o: lib/$(ARCH)/%.S
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) -c -o $@ $<
$(OBJDIR)/kern/%.o: lib/%.c
	@mkdir -p $(@D)
	$(CC) $(KERN_CFLAGS) $(CSTD) -c -o $@ $<

# Dependencies for building the kernel itself
$(OBJDIR)/kern/kernel.base.debuginfo: $(KERN_OBJFILES)
$(OBJDIR)/kern/kernel.init.debuginfo: $(KERN_OBJFILES) $(KERN_EMBEDFILES)

# How to strip kernels
$(OBJDIR)/kern/%: $(OBJDIR)/kern/%.debuginfo
	$(STRIP) $< -o $@

# Building emacs TAGS info
tags: $(OBJDIR)/kern/TAGS

KERN_HDRFILES = $(shell find kern/kern kern/arch/${K_ARCH} -name '*.h' -print) \
	inc/safetype.h \
	inc/syscall.h inc/syscall_num.h inc/container.h inc/segment.h \
	inc/thread.h inc/kobj.h inc/label.h inc/netdev.h

$(OBJDIR)/kern/TAGS: $(KERN_HDRFILES) $(KERN_SRCFILES)
	@rm -f $@
	etags -o $@ $^

# How to build the embedded bin structures
$(OBJDIR)/kern/embedbin.c: kern/Makefrag conf/embedbin/Makefrag conf/embedbin/*.mk conf/embedbin
	@mkdir -p $(@D)
	echo '#include <kern/embedbin.h>' >$@
	echo $(KERN_BINFILES) | tr ' ' '\012' | grep . | sort | perl -pi -e 'while (m,.*/(.*),) { $$fn=$$1; chomp; s,\.,_,g; s,/,_,g; s,-,_,g; $$_ = "extern const uint8_t _binary_$${_}_start[], _binary_$${_}_size[];\n"; }' >>$@
	echo 'struct embed_bin embed_bins[] = {' >>$@
	echo $(KERN_BINFILES) | tr ' ' '\012' | grep . | sort | perl -pi -e 'while (m,.*/(.*),) { $$fn=$$1; chomp; s,\.,_,g; s,/,_,g; s,-,_,g; $$_ = "{ \"$$fn\", _binary_$${_}_start, (uintptr_t)_binary_$${_}_size },\n"; }' >>$@
	echo "{ 0, 0, 0 } };" >>$@

$(OBJDIR)/kern/embed_user_%.o: $(OBJDIR)/user/%
	@mkdir -p $(@D)
	cd $(OBJDIR) && $(OBJCOPY) -I binary -O $(OBJTYPE) -B $(BFDARCH) `echo $< | sed -e 's,[^/]*/,,'` ../$@

-include $(ARCHDIR)/Makefrag.final